two numbers are in the ratio 4:5 . if difference of their cubes is 61 , find . the numbers
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Secondary SchoolMath 5+3 pts
Two numbers are in the ratio 4:5. If difference of their cube is 61, find the numbers.
Report by Simi16 06.05.2017
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Aaaddii11 · Ambitious
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prajapatyk01
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Let the numbers be 4x and 5x.
As per given condition we have,
(5x)³-(4x)³=61
125x³-64x³=61
61x³=61
x³=61/61
x³=1
x=1
Now,
4x=4×1=4
5x=5×1=5
Hence required numbers are 4 and 5.
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Answered by
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Answer is given in que.
The numbers are 4 and 5
Cube of 4=64 and 5=125
Hence, 125-64= 61
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